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Multiple Choice
In the context of cytokinesis, which statement best completes the definition: "Cytokinesis is the process by which a cell divides into two daughter _____"?
A
cells by physically separating the cytoplasm after nuclear division
B
chromosomes by separating sister chromatids during anaphase
C
organelles by increasing mitochondrial number before mitosis
D
nuclei by replicating DNA during S phase
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Verified step by step guidance
1
Step 1: Understand the definition of cytokinesis in cell biology. Cytokinesis is the process that occurs after mitosis, where the cytoplasm of a single eukaryotic cell divides to form two daughter cells.
Step 2: Recognize that cytokinesis physically separates the cytoplasm, ensuring that each daughter cell receives its own cytoplasmic contents and organelles.
Step 3: Differentiate cytokinesis from other processes mentioned: separating sister chromatids during anaphase is part of mitosis, not cytokinesis; increasing mitochondrial number before mitosis relates to organelle replication, not division; replicating DNA during S phase is part of the cell cycle but not cytokinesis.
Step 4: Conclude that the best completion of the definition is 'cells by physically separating the cytoplasm after nuclear division' because cytokinesis results in two distinct daughter cells.
Step 5: Summarize that cytokinesis follows nuclear division (mitosis) and completes the cell division process by dividing the cytoplasm, thus producing two separate daughter cells.